JPH07100925B2 - Precision paving girder device and precision paving machine - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a precision pavement girder device and a precision pavement girder device used to form a wide paved surface installed on an elevated structure with almost no difference in surface height, such as formation of an elevated slab for running a linear motor car. Pavement machine using.

[Prior art]

The conventional girder device has a structure in which a girder is installed between traveling bodies traveling on mutually parallel rails in a direction perpendicular to the traveling body, and no measures are taken against warpage of the girder. Therefore, when the conventional girder device is used, the load applied to the girder changes with the movement of the hopper body or the finishing machine, so that the girder warps upward or downward. In traveling slabs for running linear motor cars, it is required that the pavement accuracy of the concrete surface be ± 1 mm, which is extremely strict because of the installation of electromagnet rails. Therefore, when such warpage occurs, there is a drawback that the strict pavement accuracy as described above cannot be obtained. To solve this problem, it is conceivable to strengthen the strength of the girder. However, if such a strong girder is used, the weight of the entire device will be excessive, so the construction of this kind of elevated slab, which is a construction on the elevated structure. It had the drawback of not being applicable to. By the way, the width of the paved surface is required to be as wide as 10 m or more. When the distance in the width direction becomes large like this,
When the weight of the device is reduced, the strength of the girder is not satisfactory, and the warpage occurs as described above.

[Problems to be Solved by the Invention]

The present invention has been made to satisfy all such requirements, and is a lightweight pavement girder device capable of strict finishing accuracy of pavement and a precision pavement girder device using the precision pavement girder device. The purpose is to provide a paving machine for paving.

[Means for solving problems]

In order to achieve the above object, the present invention provides a reinforcing truss provided along a girder in a device in which a girder is installed between running bodies that run on mutually parallel rails in a direction perpendicular to the running body. A fluid cylinder is provided for each interval, and a sensor for detecting the amount of displacement of the girder based on a sensor line stretched along the girder is provided for the girder at a predetermined interval. Provided is a precision pavement girder device characterized by expanding and contracting a cylinder. The present invention also provides a hopper body having a finish for molding concrete or equivalent substances, in which a girder is installed between running bodies traveling on mutually parallel rails in a direction perpendicular to the traveling body, and the girder is the above-mentioned girder. In a pavement machine that is movably attached to a girder, a fluid cylinder is provided at a predetermined interval on a reinforcing truss provided along the girder, and a girder based on a sensor line stretched along the girder. Provided is a pavement machine for precision paving, characterized in that a sensor for detecting a displacement amount is provided on a girder at predetermined intervals, and a fluid cylinder is expanded and contracted by a signal from the sensor. The precision paving machine is also characterized in that a finishing machine having a rotary trowel is attached instead of the hopper body having the finishing machine.

[Action]

First, the working procedure will be described. The pavement height is measured at predetermined intervals (every 2 m in this example) to obtain a reference point, and a reference line is set in the rail direction to form a precision pavement girder device according to the present invention. And the pavement machine for precision pavement using this is set at the starting point. Next, the concrete pavement girder and the precision pavement paving machine using it are preceded by 2/3 of the pavement thickness with a concrete pump car.
And spread it by hand. This completes the preparation. Then, while moving the hopper body along the girder while applying vibration with the vibrator to compact the fresh concrete put into the hopper of the precision pavement girder device and the precision pavement paving machine using the same, Place concrete. After pouring the fresh concrete, when the breathing is completed and the air is degassed, the girder is mounted on a finishing machine and run, and the surface is made uniform with a rotary trowel. Further, if necessary, the brush is brushed in the direction of the girder to raise the finish. In the above, when the load applied to the girder changes as the hopper body or the finishing machine moves, the girder warps upward or downward as shown in FIG. 9 or 10. Then,
The sensor in contact with the sensor line senses this displacement of the girder. That is, the sensor arm rotates downward in the case of upward warp as shown in FIG. 9, and upward in the case of downward warp as shown in FIG. This rotation of the sensor arm is processed in the sensor body, on the basis of which a command signal is generated and transmitted to the fluid cylinder. This command signal causes the fluid cylinder to operate in the direction of pulling the truss rod as shown by the arrow in FIG. 9 and in the direction of pushing the truss rod as shown in the arrow in FIG. Therefore, the displacement of the girder is corrected,
The flatness of the concrete surface during the casting or finishing process is maintained.

【Example】

Next, a precision pavement girder device according to the present invention and a precision pavement pavement machine using the precision pavement girder device will be described based on the embodiments shown in the drawings. The girder 1 is made of H-shaped steel, and is installed between two traveling bodies 3 and 3 traveling on mutually parallel rails 2 in parallel with each other in a direction perpendicular to the traveling body 3. Reinforcement trusses 4 are fixed to the girders 1 and 1 along the longitudinal direction. The reinforcing truss 4
Is a fluid cylinder 5 such as a hydraulic cylinder at predetermined intervals.
Is provided. A thin and strong steel wire such as a piano wire is stretched as a sensor line 7 between the brackets 6, 6 fixed to both ends of the girders 1, 1. On the other hand, in digits 1, 1
A sensor 8 for detecting the displacement amount of the girder 1 is provided at predetermined intervals (every 2 m in this example). This sensor 8
Is vertically rotatable with the sensor body 81 (see Fig. 2).
The sensor arm 82 is always in contact with the sensor line 7, and the displacement amount of the girder 1 is sensed by the vertical movement of the sensor arm 82. The fluid cylinder 5 is electrically connected to the sensor 8,
The cylinder rod 51 is expanded and contracted by a command signal issued from the sensor 8 via a controller (not shown), and the truss rod 4a of the reinforcing truss 4 connected to the piston 52 is moved. 9 is a scaffold provided on the girder 1. The traveling body 3 is configured so that wheels 32 are provided on the lower surface of a vehicle body 31 made of steel so as to be movable along the rail 2. The traveling body 3 and the girder 1 are rotatably connected by a link 11, and a height adjusting cylinder 12 attached to the girder 1
The height can be freely adjusted, so that it can be leveled or can have an appropriate cant angle at a curve point. 40 is a hopper body that is movably attached to the girder 1.
The hopper body 40 is composed of a hopper 41 having an open ceiling and a bottom, into which fresh concrete or a substance having the same effect (for example, asphalt) is put, and a finish 42. The finish 42
The finishing plate 42a made of a flat plate fixed to the hopper 41 below the hopper 41, and a trowel plate 42b connected to the rear of the finishing plate 42a so as to rotate slightly up and down, the trowel plate 42b. A weight 42c whose weight can be adjusted is placed on. A hopper is provided on the finishing plate 42a.
A portion of 41 corresponding to the drop opening 41a is opened. Hopper 4
A vibrator 43 is inserted into the inside 1 from above. As the raw concrete, a low slump having a slump of about 7 cm to 9 cm, which is appropriately mixed and adjusted, is used. Hopper body 4
0 is a guide roller 44 that rotatably clamps the upper, lower, left, and right sides of the girder 1.
Is slidably engaged with the girder 1 by the wire 45
It is connected to the winch 46 and can move freely on the girder 1. The moving speed of the hopper body 40 is variable. 47 is a winch drive motor. Instead of the hopper body 40, a finishing machine 50 can be attached to the girder 1. The finishing machine 50 is provided with a rotary trowel 501 for finishing, and is slidably engaged with the girder 1 by guide rollers 44 that rotatably sandwich the girder 1 above and below. It is to be noted that reference numeral 10 indicates an elevated structure. Next, the operation of the precision pavement girder apparatus according to the present invention and the paver using the precision pavement girder apparatus will be described with reference to FIGS. 9 and 10. First, the work procedure will be explained. At every predetermined interval (every 2 m in this example), the pavement height is measured to obtain a reference point, and a reference line 13 is stretched in the direction of the rail 2 for precision pavement according to the present invention. The girder device and the paving machine A for precision paving using the girder device are set at the starting point. Next, the precision pavement girder device and the precision pavement pavement machine A using it are preceded by a concrete pump truck to reduce the pavement thickness 2 /.
Spread 3 by hand and level it. This completes the preparation. Then, the hopper body 40 is moved along the girder 1 while applying vibration to the fresh concrete put into the hopper 41 of the precision pavement girder apparatus and the precision pavement paving machine A using the same by vibrating it with the vibrator 43. Move it and place ready-mixed concrete. After pouring the fresh concrete, when the breathing is completed and the air is degassed, the finishing machine 50 is attached to the girder 1 to allow it to run, and the rotary trowel 501 finishes the surface to make it uniform. Further, if necessary, the brush is stroked in the direction of the girder 1 for final finishing. In the above, when the load applied to the girder 1 changes with the movement of the hopper body 40 or the finishing machine 50, the girder 1 is warped upward or downward as shown in FIG. 9 or FIG.
Then, the sensor 8 in contact with the sensor line 7 senses this displacement amount of the girder 1. That is, in the case of an upward warp as shown in FIG. 9, the sensor arm 82 rotates downward,
If it warps as shown in Fig. 10, rotate upward. This rotation of the sensor arm 82 is processed in the sensor body 81, and a command signal is generated based on this, and transmitted to the fluid cylinder 5. This command signal causes the fluid cylinder 5 to move to the ninth
In the case of the drawing, it operates in the direction of pulling the truss rod 4a as shown by the arrow, and in the case of FIG. 10, it operates in the direction of pushing the truss rod 4a as shown by the arrow. Therefore, the displacement of the girder 1 is corrected, and the flatness of the concrete surface in the pouring or finishing process is maintained. For accuracy in the direction of rail 2, for example, precision accuracy of ± 1 mm at 100 m, follow the reference line 13 along rail 2.
Is set up, and this is detected by another sensor 14.

【The invention's effect】

As described above, according to the precision pavement girder apparatus and the pavement machine using the precision pavement girder apparatus of the present invention, the warp of the girder can be prevented even with a lightweight girder, so that the pavement of ± 1 mm can be used. This has the effect of enabling surface finishing with strict accuracy. Therefore, it is possible to form a wide paved surface installed on the elevated structure with almost no difference in surface height by a machine, such as formation of an elevated slab for running a linear motor car.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a precision paving girder apparatus according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is an embodiment of a paver using the precision paving girder apparatus. Front view showing, No. 4
FIG. 5 is a plan view of FIG. 3, FIG. 5 is a front view of a hopper body, and FIG.
5 is a plan view of FIG. 5, FIG. 7 is a front view of the finishing machine, FIG. 8 is a plan view of FIG. 7, and FIGS. 9 and 10 are explanatory views of the operation. 1 ... digit, 2 ... rail, 3 ... running body, 31 ... vehicle body,
32 …… Wheels, 4 …… Reinforcement truss, 4a …… Truss rod, 5 …… Fluid cylinder, 51 …… Cylinder rod, 52…
… Piston, 6 …… Bracket, 7 …… Sensor line, 8 …… Sensor, 81 …… Sensor body, 82 …… Sensor arm, 9 …… Scaffold, 10 …… Overpass, 11 …… Link,
12 …… Height adjustment cylinder, 13 …… Reference line, 14 ……
Sensor, 40 ... Hopper body, 41 ... Hopper, 42 ... Finish, 42a ... Finishing plate, 42b ... Mortar plate, 42c ... Weight, 43 ...
Vibrator, 44 …… Guide roller, 45 …… Wire, 46
…… Winch, 47 …… Winch drive motor, 50 …… Finishing machine, 501 …… Rotating iron, A …… Precision paving machine.

Claims (3)

[Claims] 1. A device in which a girder is installed between traveling bodies traveling on rails parallel to each other in a direction perpendicular to the traveling body, and a reinforcing truss provided along the girder is provided with a fluid at predetermined intervals. A cylinder is provided, and a sensor for detecting the displacement amount of the girder based on a sensor line stretched along the girder is provided at a predetermined interval on the girder, and the fluid cylinder is expanded and contracted by a signal from the sensor. Precision pavement girder device characterized by. 2. A hopper body having a finish for molding concrete or the same substance, in which a girder is erected in a direction perpendicular to the traveling body between traveling bodies traveling on mutually parallel rails. In a pavement machine that is movably mounted, a reinforcing truss provided along the girder is provided with fluid cylinders at predetermined intervals, and the displacement of the girder based on the sensor line stretched along the girder. A pavement machine for precision paving, characterized in that a sensor for detecting the amount is provided at predetermined intervals on the girder, and the fluid cylinder is expanded and contracted by a signal from the sensor. 3. The paving machine for precision paving according to claim 2, further comprising a finishing machine having a rotary iron instead of the hopper body having the finishing.